We evaluated inter-item correlations, confirmatory factor analysis (CFA), item response theory analysis, and correlations with other PROMIS global items of these six pain intensity items. Participants reporting no pain were excluded from the analysis. The data used in this study included: 1) PROMIS Wave I sample where internet survey data were collected from 838 participants who responded to all six pain intensity items and 5,059 participants who responded to at least one pain intensity item 2) American Chronic Pain Association (ACPA) sample where 967 participants completed subset of the pain intensity items and 3) Northwestern University sample where 532 participants completed another subset of the pain intensity items. In addition to the three item banks related to pain (pain interference, pain quality, and pain behavior), six items were identified as pain intensity items. The draft PROMIS pain related items were developed based on literature reviews, clinician interviews, and qualitative research with patients with pain. Methods: The PROMIS project is focused on developing item banks and assessment instruments for pain and other patient-reported outcome domains. This document provides a summary of the item selection process based on the results of the confirmatory factor analysis (CFA) and item response theory (IRT) analysis.
Development and Analysis of PROMIS Pain Intensity Scale.Ĭhen W-H, Revicki D, Amtmann D, Jensen MP, Keefe FJ, Cella DĪims: The primary objective of this study is to develop a PROMIS Pain Intensity Scale by evaluating the unidimensionality and completing item calibration of the pain intensity items developed in the PROMIS Wave I study.
0 kommentar(er)
